Codeigniter callback dropdown form validation

Question

Just want to validate my codeigniter dropdown form before adding the selected country to database. The problem is that it inserts default value 'selectcountry' into db instead of showing the message "Please choose your country." Please help me :)

Here is My Model:

 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Model_example extends CI_Model {

  function __construct()
 {
  //Call the Model constructor
   parent::__construct();
 }

public function did_add() {

        $data = array(
        'country' => $this->input->post('country')                 
                     );     
        $query = $this->db->insert('example_table', $data);

        if ($query) {
            return true;} 
        else {
            return false;}      
    }  
}

Here is My View:

     $this->load->helper("form","file","html","url");    


     echo $message;

     echo validation_errors();

     echo form_open("example/add");

     echo form_label("Country:<br>","country");
     $data = array(
          "selectcountry"  => "Select Country",               
          "CA" => "Canada",
          "US" => "United States",
          "ZW" => "Zimbabwe"
                  );
     echo form_dropdown('country', $data, 'selectcountry');
     echo br(1);


     echo form_submit("Submit", "Add");

     echo form_close();

Here is My controller:

  <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Example extends MX_Controller {

    public function index() {       
            $data["message"] = "";            
            $this->load->view("view_example",$data);        
               }

    public function add() {                     
            $this->load->library('form_validation');
            $this->load->model('model_example');            
            $this->form_validation->set_rules('country', 'Country', 'required|callback_country_check');     
            if($this->form_validation->run()){
            $this->model_example->did_add();    
            }
            else {
            $data["message"] = "";          
            $this->load->view("view_example",$data);               
            }       
           }

     public function country_check()
    {
            if ($this->input->post('country') === 'selectcountry')  {
            $this->form_validation->set_message('country_check', 'Please choose your country.');
            return FALSE;
        }
        else {
            return TRUE;
        }
    }
}

Mohan · Accepted Answer · 2014-02-22 10:41:52Z

0

In your view page change this line

$data = array(
          "selectcountry"  => "Select Country",               
          "CA" => "Canada",
          "US" => "United States",
          "ZW" => "Zimbabwe"
                  );
  echo form_dropdown('country', $data, 'selectcountry');

to this

$data = array(
          ""  => "Select Country",               
          "CA" => "Canada",
          "US" => "United States",
          "ZW" => "Zimbabwe"
                  );
  echo form_dropdown('country', $data, set_value('country'));

You wont need another call back function to check if value is empty.

answered Feb 22, 2014 at 10:41

Mohan

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2 Comments

NiceTry Over a year ago

Thanks a lot for your help, it works in the way you described :) However, I also want to find out what I should change in my code to make that callback function work...

Mohan Over a year ago

instead of if ($this->input->post('country') === 'selectcountry') try adding if ($this->input->post('country') == 'selectcountry') to check the condition. I am not sure but it should work.

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